Reference: Evil-speaking
Easton
is expressly forbidden (Tit 3:2; Jas 4:11), and severe punishments are denounced against it (1Co 5:11; 6:10). It is spoken of also with abhorrence (Ps 15:3; Pr 18:6-7), and is foreign to the whole Christian character and the example of Christ.
See Verses Found in Dictionary
He that does not backbite with his tongue nor do evil to his neighbour nor take up a reproach against his neighbour.
A fool's lips enter into contention, and his mouth calls for strokes. A fool's mouth is his destruction, and his lips are the snare of his soul.
But now I have written unto you not to associate with anyone calling himself a brother if he is a fornicator or covetous or an idolater or a railer or a drunkard or an extortioner; with such a one do not even eat.
nor thieves nor covetous nor drunkards nor revilers nor extortioners shall inherit the kingdom of God.
That they speak evil of no one, that they not be contentious, but gentle, showing all meekness unto all men.
Murmur not against one another, brethren. He that speaks evil of his brother and judges his brother, speaks evil of the law and judges the law; but if thou judge the law, thou art not a keeper of the law, but a judge.